3906057881 has 4 divisors (see below), whose sum is σ = 4261154064. Its totient is φ = 3550961700.

The previous prime is 3906057761. The next prime is 3906057893. The reversal of 3906057881 is 1887506093.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3906057881 - 2¹⁴ = 3906041497 is a prime.

It is a super-2 number, since 2×3906057881² = 30514576339444420322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3906057481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177548075 + ... + 177548096.

It is an arithmetic number, because the mean of its divisors is an integer number (1065288516).

Almost surely, 2^3906057881 is an apocalyptic number.

It is an amenable number.

3906057881 is a deficient number, since it is larger than the sum of its proper divisors (355096183).

3906057881 is a wasteful number, since it uses less digits than its factorization.

3906057881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355096182.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 3906057881 is about 62498.4630291018. The cubic root of 3906057881 is about 1574.8754927696.

The spelling of 3906057881 in words is "three billion, nine hundred six million, fifty-seven thousand, eight hundred eighty-one".